239 lines
12 KiB
JSON
239 lines
12 KiB
JSON
{
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"name": "Telegram School Intake → Postgres → Paperless v1.1",
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"active": false,
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"isArchived": false,
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"nodes": [
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{
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"parameters": {
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"httpMethod": "POST",
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"path": "school/intake/upload",
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"responseMode": "lastNode",
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"responseData": "allEntries",
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"options": {
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"rawBody": true
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}
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},
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"id": "school-intake-webhook",
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"name": "School Intake Webhook",
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"type": "n8n-nodes-base.webhook",
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"typeVersion": 2,
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"position": [
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-1180,
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0
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]
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},
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{
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"parameters": {
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"jsCode": "\nconst req = $input.first().json;\nconst body = req.body || {};\nconst binary = $input.first().binary || {};\nconst upload = binary.data || Object.values(binary)[0];\nif (!upload) throw new Error('Expected multipart file upload in the webhook request.');\nconst required = ['class_name', 'assignment_name', 'submission_kind'];\nfor (const key of required) {\n if (!body[key] || !String(body[key]).trim()) {\n throw new Error('Missing required form field: ' + key + '. Required fields: class_name, assignment_name, submission_kind.');\n }\n}\nconst sanitize = (value, fallback = 'item') => String(value || fallback)\n .trim()\n .toLowerCase()\n .replace(/[^a-z0-9]+/g, '-')\n .replace(/^-+|-+$/g, '')\n .slice(0, 80) || fallback;\nconst stableHash = (str) => {\n let h1 = 0xdeadbeef;\n let h2 = 0x41c6ce57;\n for (let i = 0; i < str.length; i++) {\n const ch = str.charCodeAt(i);\n h1 = Math.imul(h1 ^ ch, 2654435761);\n h2 = Math.imul(h2 ^ ch, 1597334677);\n }\n h1 = Math.imul(h1 ^ (h1 >>> 16), 2246822507) ^ Math.imul(h2 ^ (h2 >>> 13), 3266489909);\n h2 = Math.imul(h2 ^ (h2 >>> 16), 2246822507) ^ Math.imul(h1 ^ (h1 >>> 13), 3266489909);\n return ((h2 >>> 0).toString(16).padStart(8, '0') + (h1 >>> 0).toString(16).padStart(8, '0'));\n};\nconst originalName = upload.fileName || body.filename || 'upload.bin';\nconst extension = (() => {\n const m = String(originalName).match(/(\\.[A-Za-z0-9]{1,10})$/);\n return m ? m[1].toLowerCase() : '';\n})();\nconst fileBytes = Buffer.from(upload.data, 'base64');\nconst checksum = stableHash([originalName, upload.mimeType || '', String(fileBytes.length), upload.data].join('|'));\nconst now = new Date();\nconst intakeId = [\n 'school',\n now.toISOString().slice(0,10).replace(/-/g,''),\n sanitize(body.class_name),\n sanitize(body.assignment_name),\n checksum.slice(0, 12)\n].join('-');\nconst storedFilename = intakeId + extension;\nconst title = [body.class_name, body.assignment_name, body.submission_kind].map(v => String(v).trim()).join(' — ');\nreturn [{\n json: {\n intake_id: intakeId,\n class_name: String(body.class_name).trim(),\n assignment_name: String(body.assignment_name).trim(),\n submission_kind: String(body.submission_kind).trim(),\n semester: body.semester ? String(body.semester).trim() : null,\n course_code: body.course_code ? String(body.course_code).trim() : null,\n paper_kind: body.paper_kind ? String(body.paper_kind).trim() : null,\n notes: body.notes ? String(body.notes).trim().slice(0, 4000) : null,\n source: body.source ? String(body.source).trim() : 'telegram',\n telegram_chat_id: body.telegram_chat_id ? String(body.telegram_chat_id).trim() : null,\n telegram_message_id: body.telegram_message_id ? String(body.telegram_message_id).trim() : null,\n original_filename: originalName,\n stored_filename: storedFilename,\n mime_type: upload.mimeType || 'application/octet-stream',\n file_size_bytes: fileBytes.length,\n checksum_sha256: checksum,\n paperless_title: title,\n received_at: now.toISOString()\n },\n binary: {\n data: {\n ...upload,\n fileName: storedFilename,\n mimeType: upload.mimeType || 'application/octet-stream'\n }\n }\n}];"
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},
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"id": "normalize-request",
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"name": "Normalize Intake Request",
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"type": "n8n-nodes-base.code",
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"typeVersion": 2,
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"position": [
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-920,
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0
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]
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},
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{
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"parameters": {
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"operation": "executeQuery",
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"query": "INSERT INTO school_paperless_intake (\n intake_id,\n class_name,\n assignment_name,\n submission_kind,\n semester,\n course_code,\n paper_kind,\n notes,\n source,\n telegram_chat_id,\n telegram_message_id,\n original_filename,\n stored_filename,\n mime_type,\n file_size_bytes,\n checksum_sha256,\n status,\n received_at\n)\nVALUES (\n '{{ $json.intake_id }}',\n '{{ $json.class_name.replace(/'/g, \"''\") }}',\n '{{ $json.assignment_name.replace(/'/g, \"''\") }}',\n '{{ $json.submission_kind.replace(/'/g, \"''\") }}',\n {{ $json.semester ? \"'\" + $json.semester.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n {{ $json.course_code ? \"'\" + $json.course_code.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n {{ $json.paper_kind ? \"'\" + $json.paper_kind.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n {{ $json.notes ? \"'\" + $json.notes.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n '{{ $json.source.replace(/'/g, \"''\") }}',\n {{ $json.telegram_chat_id ? \"'\" + $json.telegram_chat_id.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n {{ $json.telegram_message_id ? \"'\" + $json.telegram_message_id.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n '{{ $json.original_filename.replace(/'/g, \"''\") }}',\n '{{ $json.stored_filename.replace(/'/g, \"''\") }}',\n '{{ $json.mime_type.replace(/'/g, \"''\") }}',\n {{ $json.file_size_bytes }},\n '{{ $json.checksum_sha256 }}',\n 'received',\n '{{ $json.received_at }}'::timestamptz\n)\nON CONFLICT (intake_id) DO UPDATE SET\n class_name = EXCLUDED.class_name,\n assignment_name = EXCLUDED.assignment_name,\n submission_kind = EXCLUDED.submission_kind,\n semester = EXCLUDED.semester,\n course_code = EXCLUDED.course_code,\n paper_kind = EXCLUDED.paper_kind,\n notes = EXCLUDED.notes,\n source = EXCLUDED.source,\n telegram_chat_id = EXCLUDED.telegram_chat_id,\n telegram_message_id = EXCLUDED.telegram_message_id,\n original_filename = EXCLUDED.original_filename,\n stored_filename = EXCLUDED.stored_filename,\n mime_type = EXCLUDED.mime_type,\n file_size_bytes = EXCLUDED.file_size_bytes,\n checksum_sha256 = EXCLUDED.checksum_sha256,\n status = 'received',\n received_at = EXCLUDED.received_at,\n updated_at = NOW();"
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},
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"id": "pg-insert-received",
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"name": "Postgres Upsert Intake Received",
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"type": "n8n-nodes-base.postgres",
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"typeVersion": 2.6,
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"position": [
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-660,
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0
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],
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"credentials": {
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"postgres": {
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"id": "SETUP_REQUIRED",
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"name": "Shared Postgres"
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}
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}
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},
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{
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"parameters": {
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"method": "POST",
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"url": "={{($env.PAPERLESS_BASE_URL || 'https://paperless.paccoco.com').replace(/\\/$/, '') + '/api/documents/post_document/'}}",
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"sendHeaders": true,
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"headerParameters": {
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"parameters": [
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{
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"name": "Authorization",
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"value": "={{'Token ' + $env.PAPERLESS_API_TOKEN}}"
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}
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]
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},
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"sendBody": true,
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"contentType": "multipart-form-data",
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"bodyParameters": {
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"parameters": [
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{
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"name": "document",
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"value": "data",
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"parameterType": "formBinaryData"
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},
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{
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"name": "title",
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"value": "={{$json.paperless_title}}"
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}
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]
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},
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"options": {
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"timeout": 120000
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}
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},
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"id": "paperless-upload",
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"name": "Upload to Paperless",
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"type": "n8n-nodes-base.httpRequest",
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"typeVersion": 4.2,
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"position": [
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-400,
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0
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]
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},
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{
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"parameters": {
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"jsCode": "\nconst intake = $('Normalize Intake Request').first().json;\nconst response = $json;\nconst taskId = response.task_id || response.id || response.document?.id || null;\nlet paperlessDocumentId = response.document_id || response.document?.id || null;\nif (!paperlessDocumentId && typeof response === 'object' && response?.id && !response?.task_id) {\n paperlessDocumentId = response.id;\n}\nreturn [{ json: {\n ...intake,\n paperless_task_id: taskId ? String(taskId) : null,\n paperless_document_id: paperlessDocumentId ? String(paperlessDocumentId) : null,\n paperless_response: response,\n uploaded_at: new Date().toISOString()\n}}];"
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},
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"id": "capture-paperless-response",
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"name": "Capture Paperless Response",
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"type": "n8n-nodes-base.code",
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"typeVersion": 2,
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"position": [
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-140,
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0
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]
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},
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{
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"parameters": {
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"operation": "executeQuery",
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"query": "UPDATE school_paperless_intake\nSET\n paperless_task_id = {{ $json.paperless_task_id ? \"'\" + $json.paperless_task_id.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n paperless_document_id = {{ $json.paperless_document_id ? \"'\" + $json.paperless_document_id.replace(/'/g, \"''\") + \"'\" : 'NULL' }},\n paperless_title = '{{ $json.paperless_title.replace(/'/g, \"''\") }}',\n status = 'uploaded',\n uploaded_at = '{{ $json.uploaded_at }}'::timestamptz,\n updated_at = NOW()\nWHERE intake_id = '{{ $json.intake_id }}';"
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},
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"id": "pg-mark-uploaded",
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"name": "Postgres Mark Uploaded",
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"type": "n8n-nodes-base.postgres",
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"typeVersion": 2.6,
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"position": [
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120,
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0
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],
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"credentials": {
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"postgres": {
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"id": "SETUP_REQUIRED",
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"name": "Shared Postgres"
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}
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}
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},
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{
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"parameters": {
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"jsCode": "\nreturn [{\n json: {\n ok: true,\n intake_id: $json.intake_id,\n status: 'uploaded',\n paperless_task_id: $json.paperless_task_id,\n paperless_document_id: $json.paperless_document_id,\n paperless_title: $json.paperless_title,\n stored_filename: $json.stored_filename,\n received_at: $json.received_at,\n uploaded_at: $json.uploaded_at\n }\n}];"
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},
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"id": "success-response",
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"name": "Return Success Payload",
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"type": "n8n-nodes-base.code",
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"typeVersion": 2,
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"position": [
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360,
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0
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]
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}
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],
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"connections": {
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"School Intake Webhook": {
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"main": [
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[
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{
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"node": "Normalize Intake Request",
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"type": "main",
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"index": 0
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}
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]
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]
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},
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"Normalize Intake Request": {
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"main": [
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[
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{
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"node": "Postgres Upsert Intake Received",
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"type": "main",
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"index": 0
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}
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]
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]
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},
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"Postgres Upsert Intake Received": {
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"main": [
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[
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{
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"node": "Upload to Paperless",
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"type": "main",
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"index": 0
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}
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]
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]
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},
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"Upload to Paperless": {
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"main": [
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[
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{
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"node": "Capture Paperless Response",
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"type": "main",
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"index": 0
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}
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]
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]
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},
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"Capture Paperless Response": {
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"main": [
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[
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{
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"node": "Postgres Mark Uploaded",
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"type": "main",
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"index": 0
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}
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]
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]
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},
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"Postgres Mark Uploaded": {
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"main": [
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[
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{
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"node": "Return Success Payload",
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"type": "main",
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"index": 0
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}
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]
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]
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}
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},
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"settings": {
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"executionOrder": "v1",
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"binaryMode": "separate"
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},
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"staticData": null,
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"meta": {
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"templateCredsSetupCompleted": false,
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"artifactVersion": "v1.1"
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},
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"pinData": {},
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"tags": [
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{
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"name": "school"
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},
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{
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"name": "paperless"
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},
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{
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"name": "postgres"
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},
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{
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"name": "telegram"
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}
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]
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}
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